Etude et compensation des non-linéarités de convertisseur analogique numérique utilisant une architecture à repliement et interpolation

Abstract : Many researches are trying to improve the nowadays analog-to-digital converters in proposing new architectures and new fab processes. This evolution is long and need to follow a step-by-step roadmap. However, one can use methods to compensate the lacks of a device while waiting for the next step. Those methods allow to push further the device's limits while waiting for the next generation. They also allow to have a better understanding of the defects that can drive the designers in new ways of designing.
In this context, we study the effect of a compensation based on a unidimensional LookUp Table (LUT1D) on a folding and interpolation converter.
In order to fill this LUT, we present an optimized algorithm that can extract the non linearities of the device from a complex spectrum lead on the output data.
Sensitives parameters are then studied through a set of experiments lead on a dedicated converter. We proove that a unique LUT could be computed to provide a robust compensation independantly of the
frequencies and temperature variations.
At last, we propose a new algorithm that perfoms the spectral extraction of a signal with low cost ressources. This study allows us to begin the path of the embedded compensation.
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https://tel.archives-ouvertes.fr/tel-00288869
Contributor : Dominique Dallet <>
Submitted on : Wednesday, June 18, 2008 - 7:51:34 PM
Last modification on : Thursday, January 11, 2018 - 6:21:07 AM
Long-term archiving on : Friday, May 28, 2010 - 7:30:14 PM

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  • HAL Id : tel-00288869, version 1

Citation

Vincent Fresnaud. Etude et compensation des non-linéarités de convertisseur analogique numérique utilisant une architecture à repliement et interpolation. Micro et nanotechnologies/Microélectronique. Université Sciences et Technologies - Bordeaux I, 2008. Français. ⟨tel-00288869⟩

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